ATE35199T1 - DATA COMMUNICATION NETWORKS. - Google Patents
DATA COMMUNICATION NETWORKS.Info
- Publication number
- ATE35199T1 ATE35199T1 AT83305197T AT83305197T ATE35199T1 AT E35199 T1 ATE35199 T1 AT E35199T1 AT 83305197 T AT83305197 T AT 83305197T AT 83305197 T AT83305197 T AT 83305197T AT E35199 T1 ATE35199 T1 AT E35199T1
- Authority
- AT
- Austria
- Prior art keywords
- transmit
- token
- mode
- circuit
- transmission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/422—Synchronisation for ring networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
- Vehicle Body Suspensions (AREA)
- Mobile Radio Communication Systems (AREA)
- Burglar Alarm Systems (AREA)
Abstract
A circuit for signal generation and synchronisation is disclosed for a ring network in which a number of stations communicate with each other. The circuit, which is provided at each station in the ring, includes a phase locked loop which loosely couples the transmit and receive clocks of each station during a repeater mode of operation. During a transmit mode the receive and transmit clocks are de-coupled so that phase delay around the ring does not degrade the transmission clock each time a transmission is initiated. The circuit includes logic gates for detecting the transmission of a token, means for generating a token and means for jam syncing the transmit and receive clocks to detect transitions in the incoming data during the repeater mode and after a token has been generated at the end of the transmit mode.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/416,312 US4495617A (en) | 1982-09-09 | 1982-09-09 | Signal generation and synchronizing circuit for a decentralized ring network |
EP83305197A EP0103460B1 (en) | 1982-09-09 | 1983-09-07 | Improvements in or relating to data interconnecting networks |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE35199T1 true ATE35199T1 (en) | 1988-07-15 |
Family
ID=23649456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT83305197T ATE35199T1 (en) | 1982-09-09 | 1983-09-07 | DATA COMMUNICATION NETWORKS. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4495617A (en) |
EP (1) | EP0103460B1 (en) |
AT (1) | ATE35199T1 (en) |
DE (1) | DE3377103D1 (en) |
GB (1) | GB2127255B (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59188256A (en) * | 1983-04-11 | 1984-10-25 | Hitachi Ltd | Transmitting method of loop transmission system |
GB8310821D0 (en) * | 1983-04-21 | 1983-05-25 | Int Computers Ltd | Data communication systems |
AT382253B (en) * | 1984-06-22 | 1987-02-10 | Austria Mikrosysteme Int | LOOSE COUPLED DISTRIBUTED COMPUTER SYSTEM |
FR2583186B1 (en) * | 1985-06-07 | 1987-10-02 | Flonic Sa | PAID PARKING MANAGEMENT SYSTEM |
FR2584515B1 (en) * | 1985-07-02 | 1987-10-02 | Flonic Sa | MEMORY TERMINAL INTERCONNECTION SYSTEM |
JPH0640649B2 (en) * | 1986-04-16 | 1994-05-25 | 株式会社日立製作所 | Multi-stage regenerative repeater |
US4730309A (en) * | 1986-08-25 | 1988-03-08 | Amp Incorporated | Data transmission station |
DE3702591A1 (en) * | 1987-01-29 | 1988-08-11 | Sonnenschein Accumulatoren | CIRCUIT TO CONTINUOUSLY CHECK THE QUALITY OF A MULTI-CELL BATTERY |
US5163149A (en) * | 1988-11-02 | 1992-11-10 | International Business Machines Corporation | Combining switch for reducing accesses to memory and for synchronizing parallel processes |
US5619686A (en) * | 1993-11-18 | 1997-04-08 | National Semiconductor Corporation | Source synchronized data transmission circuit |
US5923704A (en) * | 1996-03-25 | 1999-07-13 | Advanced Micro Devices, Inc. | Transmit clock generation system and method |
EP0903022B1 (en) * | 1996-05-31 | 2003-10-29 | Unisys Corporation | Digital communication system which eliminates cumulative jitter |
US6956826B1 (en) * | 1999-07-07 | 2005-10-18 | Serconet Ltd. | Local area network for distributing data communication, sensing and control signals |
US6529983B1 (en) | 1999-11-03 | 2003-03-04 | Cisco Technology, Inc. | Group and virtual locking mechanism for inter processor synchronization |
US6892237B1 (en) * | 2000-03-28 | 2005-05-10 | Cisco Technology, Inc. | Method and apparatus for high-speed parsing of network messages |
US6505269B1 (en) | 2000-05-16 | 2003-01-07 | Cisco Technology, Inc. | Dynamic addressing mapping to eliminate memory resource contention in a symmetric multiprocessor system |
US7389332B1 (en) | 2001-09-07 | 2008-06-17 | Cisco Technology, Inc. | Method and apparatus for supporting communications between nodes operating in a master-slave configuration |
DE10147772C1 (en) * | 2001-09-27 | 2003-09-11 | Siemens Ag | Method for operating a transmission system and transmission system in a power supply network |
US7421478B1 (en) | 2002-03-07 | 2008-09-02 | Cisco Technology, Inc. | Method and apparatus for exchanging heartbeat messages and configuration information between nodes operating in a master-slave configuration |
US7415535B1 (en) * | 2002-04-22 | 2008-08-19 | Cisco Technology, Inc. | Virtual MAC address system and method |
US7200610B1 (en) * | 2002-04-22 | 2007-04-03 | Cisco Technology, Inc. | System and method for configuring fibre-channel devices |
US7188194B1 (en) | 2002-04-22 | 2007-03-06 | Cisco Technology, Inc. | Session-based target/LUN mapping for a storage area network and associated method |
US7587465B1 (en) | 2002-04-22 | 2009-09-08 | Cisco Technology, Inc. | Method and apparatus for configuring nodes as masters or slaves |
US7433952B1 (en) | 2002-04-22 | 2008-10-07 | Cisco Technology, Inc. | System and method for interconnecting a storage area network |
US7165258B1 (en) * | 2002-04-22 | 2007-01-16 | Cisco Technology, Inc. | SCSI-based storage area network having a SCSI router that routes traffic between SCSI and IP networks |
US7240098B1 (en) | 2002-05-09 | 2007-07-03 | Cisco Technology, Inc. | System, method, and software for a virtual host bus adapter in a storage-area network |
US7831736B1 (en) | 2003-02-27 | 2010-11-09 | Cisco Technology, Inc. | System and method for supporting VLANs in an iSCSI |
US7295572B1 (en) | 2003-03-26 | 2007-11-13 | Cisco Technology, Inc. | Storage router and method for routing IP datagrams between data path processors using a fibre channel switch |
US7904599B1 (en) | 2003-03-28 | 2011-03-08 | Cisco Technology, Inc. | Synchronization and auditing of zone configuration data in storage-area networks |
US7433300B1 (en) | 2003-03-28 | 2008-10-07 | Cisco Technology, Inc. | Synchronization of configuration data in storage-area networks |
US7526527B1 (en) | 2003-03-31 | 2009-04-28 | Cisco Technology, Inc. | Storage area network interconnect server |
US7451208B1 (en) | 2003-06-28 | 2008-11-11 | Cisco Technology, Inc. | Systems and methods for network address failover |
EP3249941A1 (en) * | 2016-05-24 | 2017-11-29 | Advanced Digital Broadcast S.A. | System and method for avoiding diseqc conflicts |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB685216A (en) * | 1949-11-24 | 1952-12-31 | Gen Electric Co Ltd | Improvements in or relating to multi-channel pulse communication systems |
US3456242A (en) * | 1966-01-24 | 1969-07-15 | Digiac Corp | Data handling system and method |
NO123200B (en) * | 1967-11-23 | 1971-10-11 | Svenska Handelsbanken | |
US4042783A (en) * | 1976-08-11 | 1977-08-16 | International Business Machines Corporation | Method and apparatus for byte and frame synchronization on a loop system coupling a CPU channel to bulk storage devices |
FR2373923A1 (en) * | 1976-12-10 | 1978-07-07 | Telecommunications Sa | DIGITAL TIME-DIVIDING TRANSMISSION SYSTEM ALLOWING THE TRANSIT, INSERTION AND EXTRACTION OF TRACKS |
JPS5923502B2 (en) * | 1977-03-26 | 1984-06-02 | 三菱電機株式会社 | loop transmission system |
US4231114A (en) * | 1978-02-27 | 1980-10-28 | Motorola, Inc. | Synchronizing means for a two-way communication system |
US4320515A (en) * | 1980-03-07 | 1982-03-16 | Harris Corporation | Bit synchronizer |
FR2478914B1 (en) * | 1980-03-19 | 1986-01-31 | Ibm France | METHOD AND DEVICE FOR INITIAL ADJUSTMENT OF THE CLOCK OF A SYNCHRONOUS DATA RECEIVER |
DE3171364D1 (en) * | 1981-03-12 | 1985-08-22 | Ibm | Method for connecting or disconnecting selected stations in a ring communication system, and ring communication system including selectively connectable stations |
US4438520A (en) * | 1981-07-22 | 1984-03-20 | Massachusetts Institute Of Technology | System for regenerating a data word on a communications ring |
-
1982
- 1982-09-09 US US06/416,312 patent/US4495617A/en not_active Expired - Fee Related
-
1983
- 1983-09-07 AT AT83305197T patent/ATE35199T1/en not_active IP Right Cessation
- 1983-09-07 GB GB08323924A patent/GB2127255B/en not_active Expired
- 1983-09-07 DE DE8383305197T patent/DE3377103D1/en not_active Expired
- 1983-09-07 EP EP83305197A patent/EP0103460B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0103460A3 (en) | 1986-04-16 |
GB2127255A (en) | 1984-04-04 |
DE3377103D1 (en) | 1988-07-21 |
US4495617A (en) | 1985-01-22 |
GB2127255B (en) | 1985-11-20 |
EP0103460B1 (en) | 1988-06-15 |
EP0103460A2 (en) | 1984-03-21 |
GB8323924D0 (en) | 1983-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |